The O’s will head to National League side Dagenham & Redbridge for a pre-season friendly ahead of the 2016-17 League Two season.
The Daggers were relegated from League Two last season, and will face John Still’s side at the Chigwell Construction Stadium on Tuesday, July 26, with a 7.45pm kick-off. Admission prices for the fixture are still to be confirmed.
The O’s managed to secure a league double over their local rivals last term, with a 3-1 win in August at Dagenham, courtesy of goals from Lloyd James, Paul McCallum and Dean Cox.
In the reverse fixture Orient came out on top 3-2 with a double from Jay Simpson and one for Armand Gnanduillet sealing the victory.
Further pre-season fixtures will be announced in due course.